Appendix B	PM2.5 - Maximum 24-Hour Concentration (National)								Table B-17											

AIR BASIN	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
GREAT BASIN VALLEYS												40.7	68.0	76.0	68.0	41.0	81.0	27.0	193.0	57.0
LAKE COUNTY												14.5	10.0	15.1	74.7	21.9	18.1	11.3	21.6	9.5
LAKE TAHOE												21.0	23.0	31.0	27.0	21.0	20.0			
MOJAVE DESERT												47.6	38.6	35.0	38.0	28.0	34.0	28.0	22.0	28.0
MOUNTAIN COUNTIES												92.0	48.0	120.0	41.0	43.0	44.0	60.0	51.0	72.0
NORTH CENTRAL COAST												31.4	26.4	25.6	23.5	15.9	22.6	21.7	13.0	20.9
NORTH COAST												36.9	24.0	38.3	59.7	36.1	25.6	31.8	35.0	33.8
NORTHEAST PLATEAU												40.0	38.0	35.0	5.0	10.0		26.0	22.0	
SACRAMENTO VALLEY											96.0	108.0	98.0	78.0	91.0	65.0	65.0	80.0	78.0	61.0
SALTON SEA												52.5	84.2	60.2	46.5	65.1	74.2	67.6	68.8	52.7
SAN DIEGO												64.3	66.3	60.0	53.6	239.2	67.3	44.1	63.3	126.2
SAN FRANCISCO BAY AREA												90.5	67.2	107.5	76.7	56.1	73.7	54.6	75.3	57.5
SAN JOAQUIN VALLEY												136.0	160.0	154.7	90.7	67.8	71.0	92.5	87.0	104.0
SOUTH CENTRAL COAST												64.6	55.3	57.6	46.4	116.0	41.2	42.4	31.7	48.8
SOUTH COAST												121.4	119.6	98.0	82.1	121.2	93.8	132.6	72.2	82.8